WIP: Integer backend using OpenSSLs Bignum library
Implementation/integration of an additional backend for the the Integer
data-type using OpenSSL's BIGNUM library.
This adds a BSD (like) licensed implementation with somewhat comparable performance to integer-gmp and can be enabled like integer-simple so far and was discussed already within this proposal - rendered.
I added it as an "in-tree" package similar to integer-gmp, upstream here. Also note that there are still some necessary and optional things to TODO (see README.md), but I wanted to get some first feedback.
The build fails because it refers changes in text
(PR) and bytestring
(PR) which are not yet on the gitlab mirrors.